Waldemar bergh



(No Model.)

W. BERGH.

DRUM FOR OBNTRIFUG'AL FLUID SEPARATING MACHINES. No. 422,369. PatentedMar. 4, 1890.

B A I I Flol L U L Q M M N no.2,

n. PETERS, Ptm o-Lillwgnplwn war-m m n.c.

UNITED STATES PATENT OFFICE.

IVALDEMAR BERGH, OF LONDON, ENGLAND, ASSIGNOR TO DAVID HUMMEL,

I JR, OF SAME PLACE.

DRUM FOR CENTRIFUGAL FLUlD-SEPARA'TlNG 'MACHINES.

- SPECIFICATION forming part of Letters Patent No. 422,369, dated March4, 1890.

Application filed August 26 1889. Serial No. 322,014. (No model.)

To all whom it may concern:

an upper or separator chamber and a lower chamber .for receiving andconveying away the heavier separated fluid, and provide means for takingoff the lighter fluid at the top of the drum and the heavier fluid atthe bottom.

My invention also consists in a special manner of constructing such drumor uniting the parts thereof.

The invention is particularly applicable to machines for separating milkinto cream and skim-milk.

Figure 1 is a Vertical section through the drum with its outerreceptacles for cream and skim-milk, and is, as an example, shownarranged to be driven from above for instance, in the manner describedin my application for Letters Patent filed May 16, 1889, Serial No.310,941, and on which a patent, No. 415,698, was granted November26,1889. It may, however, obviously just as'well be driven from below,the spindle being then continued downward. Figs. 2,3, andet are similarsections of the drum, illustrating various modes of combining the partsof the drum by means of spinning.

The drum-spindle A is formed with a conical bottom enlargement A, andremovably fits in a slightly-conical opening L formed in the centralring L, which fits securely within an annular opening formed in thediaphragm, as shown, said ring L thereby forming practically a portionof the diaphragm L, formed with a downwardly-projecting flange forconveniently screwing, soldering, or otherwise securing it to theupwardly-proj ecting flange of the lower compartment M, and to theflange or bottom rim of the separator-drum proper B or uppercompartment. The latter is of a part spherical form with a neck B, whichat the top is formed with a small inner flange B Instead of the partspherical form shown in full lines, thedrum proper or upper compartmentB may, as shown in dotted lines, .55

taper upward to the neck B in a straight line,

or nearly so. The outlet hole. or holes I) for the lighter liquid-such'as the cream inthe case of separating milk into cream and skimmilk-are justbelow the inner flange Biwhere I the neck is of the smallest internaldiameter. The opening or chamber L is for receiving the milk from thefeed-tube and has slanting outlet-holes Z communicating with the drum B.Thelower compartment M, which receives the skim-milk by way of the holeor holes m, has a central hole M, with a small notch m, and aturned-back lower lip flange M for ready escape of the skim milk to thereceiver N.

O is the receiver for the cream.

The skim-milk receiver and the cream-re' ceiver are of usual form, andhave the usual outlet-pipes to pails placed below. The cone-pivot L hasits bearing in the hard 7 5 bearing-piece Q, which is provided with afine central hole to enable said pivot to readily find its true center.The piece Q is inserted in the step-piece Q, which has a large centralhole for the insertion of a tool when it is de sired to remove the pieceQ.

Fig. 2 shows a suitable form of drum B,

spun in one with the lower compartment M over the edge of the diaphragmL. Fig. 3

shows another form in which the lower compartment M is spun over thedrum B and diaphragm L. Fig. 4 shows a form in which the drum B is spunover the diaphragm L and lower compartment M. The inside of the drum Band lower compartment M are provided in all cases with the usualvertical partitions, though not shown in the drawings.

Having fully described my invention,what I desire to claim and secure byLetters Patent 1s- 5 1. In a drum for centrifugal fiuid-separat- 9 ingmachines, the combination,with the drumcasing, of a diaphragm locatedwithin said casing and dividing the interior thereof into an upper andalower chamber, as described, 10c said diaphragm being provided with thefollowing openings: a central opening for receiving the supply of fluidand to afford a means for fixing the operatingrspindle thereto, openingswhich communicate with said central opening and with the upper chamberof the drum, and a circumferential opening or openin gs leading from theupper to the lower chamber of the drum, the lower portion of the drun1-casing havinga central opening for the escape of the heavier fluid fromthe lower chamber, and the upper portion of the drum-casing beingprovided near its top with an opening for the escape of the lighterfluid from the upper chamber, as described.

2. The upper chamber B, having a neck B,

inner flange B and hole I) for cream-escape, 15 i 11 combination withthe diaphragm L, having a central supply-chamber with passages land ahole on for skim-milk efiiux, and the bottom chamber M, having notch m,and lip-flange M for skim-milk escape, substantially as set 20 DAVIDMoGAW,

77 Chancery Lane, London.

